For a movie of showing the effect of cholera exotoxin on human cells, see the Theriot Lab Website at Stanford University Medical School. Click on Vibrio cholerae colonizing human cells. 3. Enterotoxins. A number of bacteria produce exotoxins that bind to the cells of the small intestines. Most of these toxins catalyze the ADP-ribosylation of host cell proteins that turn the synthesis of the metabolic regulator molecules cyclic AMP (cAMP) or cyclic GMP on and off in intestinal mucosal cells.
DEFINITION of 'Encryption'. Encryption is a means of securing data using a password (key). The encryption process is simple â data is secured by translating information using an algorithm and a binary key. When the data needs to be read back, the code is decrypted using either the same key or a different key depending on the type of encryption used.
1) In cryptography, a key is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text, or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message.